Ventilating-grating.



N. BERSON.

VENTlLATING GRATING.

APPLICATION FILED MAY 16, 1913.

Patented May 23, 1916.

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To all whom it may concern:

Be -it known that I, NATHAN Bnnso'mn subject of the Czar of Russia,residlng 1n the city of New York, county of Queens, State of New York,have invented a certam new and useful Ventilating- Grating, of which thefollowing is a specificatlon.

This invention is an improved grating, and the object of the invention15 to simpllfy rating construction and economize-1n both fabor andmaterial.

Broadly stated, the invention embodies a grating wherein the partsthereof are assembled or secured together without necessitatin theemployment of rivets or other 1ndepen ent fastening means, said meansbeing integral with, or part of, the members which form the grating.

Thefinvention, moreover, consists 1n the novel method of constructingsuch a grating.

In the referred embodiment of the lnvention herem shown, the gratingembodies longitudinal members or supports, and transverse members orties. porting members is provided wlth a plurality of slots, each ofwhich is of substan;

- tially the same dimensions as the cross section of the tie members.These tie members are passed through the said. slots and are providedwith notches which. are adapted to engage the longitudinal membersad]acent to said slots. When so positioned, locking means, integral withsaid longitudlnal members, may be manipulated, whereby each tie issecurely locked in position.

In the accompanying drawings, I have illustrated one practicalembodiment of the invention, but the construction shown therein is to beunderstood as illustrative, only,

and not as defining the limits of the invention.

Figure 1 is a plan view illustrating a portion of a typical gratingembodying the present invention. Fig. 2 is a perspective View showing afragment ofone of the longitudinal members and short lengths of two ofthe transverse tie members, the latter being shown in positions astheyare about .to enter certain slotsin the former, as'in the process ofassembling the grating. F1g. 3

is a perspective of a portion of the grating showing the partsassembled, as in the finished product. Fig. 4 is a transverse sec tiontaken on the line 4-4.- of Fig. 1, illustrating the engagement betweenthe longitudinal and tie members.

' Specification of Letters Patent.

Application filed Kay 16, 1818. Serial 1&0. 768,128.

- slot. The said tongues,

Each of the suplength of said slots.

Patented May 2a, 1916.

any one of a plurality of longitudinal mer'n here which are placed sideby side in sub stantially parallel relation to one another and form theprincipal supporting means for carrying the weight to which the gratmgmay be subjected. These members are slotted at intervals along theirlength, as at B, but, in the operation of cutting out these slots, atongue is left at one end of each owing to the fact that the grating ismade from malleable material such as, e.g., wrought iron, may be bentout of the plane of the rest of their respectlve members A, as shown,more partlcularly, in Fig. 2. By this bending of the tongues, the slotsare opened for practically their full length so as to allow for thethreading therethrough of the transverse or tie members 0 of thegrating.

The tie members are, in thickness, substantially equal to the width ofthe slots B, and are, in width, slightly less than the Each tie has aplurality of notches 0, along one of its edges, said notches being ofsuch distance apart as it is desired to space the longitudinal members Afrom one another, and are, in width,

substantially equal to the thickness of said longitudinal memberswMoreover, the depth of the notches is substantially equal to thedistance from'the upper edges of the supporting members to the top ofthe slots B.

It will thus be manifest that, in assembling theparts of the grating,the tongues 12 are bent out-and the tie members are then passed throughthe successive supporting members A for the entire width of the grating.When this has been accomplished, the members A are arranged so that theyare in juxtaposition with their respective notches c, in the tiemembers. The tie members are now shifted in the direction of theirwidth, whereby the notches in said members straddle that portion of thelongitudinal members above the slots, by virtue of which engagement,said longitudinal members are retained against transverse movement. Thishaving been done, the tongues are next forced back into their initialposition, as

length that, when forced into place, they will tightly jam the bases ofthe notches c, in the ties G, against the upper end of the slots l3,whereby a structure of great rigidity results. Consequently, the gratingwill, owing to the engagement of the notches c in the ties G with thelongitudinal members, have one face which is substantially flush.

When assembled, the grating is extremely neat in appearance, and greatlyresembles a casting. It is adapted for many uses, but was primarilyconceived to take the place of the intricate and costly constructionswhich are employed in covering subway vents.

By the present invention, a neat, strong, and comparatively cheapgrating is provided which, aside from thesimplicity of its componentparts, may be assembled with ease and celerity. y

Having thus fully described the invention, what I claim as new, anddesire to secure by Letters Patent is In a subway grating of the classdescribed, a joint embodying, in combination, two intersecting bars eachof which is substantially rectangular in cross section and one of whichis wider than the other, the wider of said bars having a transverseslot, substantially equal in length to the width to be positioned inalinement with the bar or out of alinement therewith, and the narrowerof the two bars being provided with a notch in one of its edges only,whereby the narrower bar is adapted to be passed through the slot in thewider bar when the tongue is in a position out of alinement With saidbar and shifted transversely of its length, whereupon the positioning ofthe tongue in alinement With-the bar causes the notch in the narrowerbar to engage with the larger bar adjacent the slot thereof for thepurpose of locking the bars against relative movement with one of theedges of each of said bars flush.

In testimony whereof I have signed my 7 name to this specification inthe presence 4 of two subscribing witnesses. v

, NATHAN BERSON.

Witnesses:

FREDRIGK H. NYHo M, AARON N. JAFFE.

